neighborhoods in new york and new jersey remain under water while energy companies work to repair downed power line millions suspect another night without electricity. it may be over a week before power is restored in some places. as dawn broke this morning parts of the subway heaved into motion for the first time since sunday night. commuters eager to return to work with restrictions to auto transport. few in the northeast have not felt the effects of hurricane sand y. experts estimate the disaster will cost up to $50 billion but none forgot i that the true cost of the hurricane lies in the lost of human life. as we learn more about the events of this week some question about greater preparedness could have helped avert tragedy. an equally important question what is the relationship between these frequent hurricanes, sea level and desire to live next to the water. we look at the question of the relationship between the devastation of hurricane sandy and the rise of global warming. today michael bloomberg of new york endorsed president obama. here's part of what the mayor said. our clima